2025 Emira V6 MT, 4th to 3rd gear grind/rattle, normal?

[rzem6bay]

Is the following grinding/almost rattle noise, appearing to come from the engine area is normal, my fault, or the car's fault? The car is Emira V6 Manual 2025.

Let's say I am driving in Sport mode in 4th gear, when speed is around 68mph, I hold the clutch, blip the gas hard (the shift now sign flashes), then when rpm is around 5K, i downshift to 3rd.

If I immediately jam the gas the moment I finish the downshift, I hear a grind/rattle from the engine area for like 2 seconds. However, if I after downshift to 3rd, wait for a split second, then press on gas, no grind or rattle is heard.

I don't know how to describe the sound. The car itself doesn't rattle. Some sound from the engine area is heard, like maybe a grind, a box of rocks shaking, something like that.

The gearbox itself doesn't fight me at all. I can cleanly and shift with no gearbox resistance.

Is this normal? or am I unreasonably pushing the car?

 

[cryptovince]

My Emira is currently at my local dealer being serviced, and I mentioned to my service advisor that I am experiencing an issue that sounds similar to yours. For me it seems to be coming from the supercharger. It's a loud metallic sound that sounds like supercharger whine but isn't normally part of the supercharger sound. It only happens occasionally, but it's usually in 3rd/4th gear if I press hard on the accelerator.

I'll report back once I get an update.

 

[rzem6bay]

My Emira is currently at my local dealer being serviced, and I mentioned to my service advisor that I am experiencing an issue that sounds similar to yours. For me it seems to be coming from the supercharger. It's a loud metallic sound that sounds like supercharger whine but isn't normally part of the supercharger sound. It only happens occasionally, but it's usually in 3rd/4th gear if I press hard on the accelerator.

I'll report back once I get an update.

Does it involve a downshift in your case or even when in 3rd you press hard you hear it?

 

[cryptovince]

For me it's mostly during an upshift to 3rd or 4th. I can hear the noise more clearly in Tour mode when the exhaust is quieter, which is what leads me to believe it's supercharger-related, as opposed to engine-related.

Does it involve a downshift in your case or even when in 3rd you press hard you hear it?